Thermostatic valve device.



APPLICATION FILED APR. 9, 1907.

Patented Oct. 8, 1911.

2 SHEETSSHEET 1.

Q/vi In eases 16 E. W. COMFORT. THERMOSTATIG VALVE DEVICE.

APPLICATION FILED APR.9, 1907.

1,004,684., v Patented Oct. 3, 1911.

2 SHEETS-SHEET 2.

Will! 19i b1 emu i ITED sATEs EDWARD W. COMFORT, F CAMDEN, NEW JERSEY, ASSIGNOR TO WARREN WEBSTER 80 COMPANY, A CORPORATION OF NEW JERSEY.

THERMOSTATIG VALVE DEVICE.

Specification of Letters Patent.

Application flled'April 9, 1907. Serial No. 367,160.

Patented Oct. 3, 1911.

My invention relates particularly to valve devices to control thermostatically the dis charge of air and water of condensation from steam radiators.

Objection has been found to thermostatic valves which employ composition expanding pieces, owing to the liability of the composition deteriorating in quality after much use and the composition pieces becomin and thereby rendered meflicient. Di culty has also been experienced in the use of compound metal thermostats in making the same sufliciently small and sensitive.

' It. is the object of my invention to provide a valve device having a compound metal thermostat possessing the requisite sensitiveness and of a satisfactory size.

It is also an object of my inventionto provide means for separating the dirt or foreign. matter that may enter from the radiator and preventing it from assing through the valve passageway-and a ecting the operation of the valve. The invention also relates to improvements in construction and combinations of parts, whereby the thermostatic action may be adjusted and the assembling of the parts may be facilitated.

In the drawin s: Figure l is a vertical a thermostatic valve d'emy invention; Fig. 2 is a }with a socket i which receives a supporting 5 pin j carried by the valve-body. The thersectional view 0 vice embodyin horizontal section of'the same on the line AA of Fig. 1; Fig. 3 is a pers ective view 4 of, one end of the preferred orm of the thermostat; Fig. 4 is a vertical view?" similar to Fig. .1 illustrating a" modificationyand Fig. 5 is a horizontal section on the line" 'BB of Fig.4. e 4 a is the valve-body havin an inletv b and an outlet 0. In thepartic ar construction shown'the inlet 6 opens into a dirtchamberor pocket d, fromthe upper part of which the thoroughfare or inlet'passageway g leadsinto the interior e of the valve-body proper. .This thoroughfare"or-passageway -is controlledbya valve. fiwhich in turn controlled by a spring and the thermostat inath'e chamber 0..

and2I have 'shown a conical .it on its seat. In this case the stem bent ' valve-body. In t valve ffitting a conical seat on a seat p ece 9 screwed into the dividingwall e, with a stem 7" extending through a guide a on the seat piece and the spring f between jthe guide a and valve acting to force it open.

In Figs. 4 and 5, the valve 7 fits a seat in the wall e and the spring 7 acts to close f is guided in a guide lug a in the valve casting. The thermostat is located in the chamher a and is formed of bars connected at thelr ends and composed of metal having different coefiicients of expansion.

In the preferred form the thermostat is composed of three bars or metal strips secure y fastened together at their ends, with the two outer bars 8 s somewhat longer than sion, and when the thermostat is employed as in Figs. gl and 5to open the valve against the spring action, the member t is the one having the higher coefiicient. I do not mean =to limit my invention to the use of any particular metals. Satisfactory results have been obtained with zinc and iron, but I prefer to use phos hor-bronze as themetal of greater expansi ility and an iron-nickel alloly known as invar as the other metal. T is thermostat is provided on one of its ;bars with a pin 71, which fits a socket h in the head of the valve f, and on the other bar mostat is arranged as shown, supported on 05 one side by the pin it and socket h and on it is the cap-( l sing the open top ofthe e lower part-of the dirt 11o chamber d is a wall d forming a pocket 27 having an opening 39 into the interior of the valve-body. An aperture 0 in the wall d is controlled by a plug 1- screwed into the body. When the plug 1' is unscrewed to open the aperture 0, the dirt or sediment in the chamber d may be discharged through the opening p into the lower part of the chamber 6 and hence to the return. The chamber d forms a well below the main inlet I which becomes filled with water and forms a catch basin for the collect-ion of the particles of heavy matter, which are thus prevented from passing through the valve passageway g.

The thermostat s, s, t is adjusted so that the valve f will be slightly open to permit the escape of air and water of condensation into the chamber 6 and thence through the outlet 0 into the return; and the extent of this opening may be adjusted by the pin 3' to suit the requirements of the particular unit of radiation to which the valve is attached. When steam passes through the opening 9 into the chamber 6 the higher temperatureacting on the thermostat will cause the metal having the greater coeificient of expansion to expand, and the valve f will be closed upon its seat against the action of the spring f. As soon as the thermostat cools and contracts, the sprin f will again open the valve f to the norma extent permitted by the adjustment of the pin j.

What I claim is as follows:

1. In a thermostatic valve, the combination of a body having a main chamber provided with the outlet, and a preliminary chamber provided with the inlet and forming a pocket extending below the inlet for the interception of dirt, a wall between said chambers, the wall between the main chamber and preliminary chamber being jpro-' vided with the thoroughfare between the inlet andputlet located adjacent to the inlet, a valve-piece controlling said thoroughfare, a thermostat extending longitudinally in the I main chamber. and having its central portion on one side acting on and supported by said valve-piece,and a supporting pin at substantially the middle of the outer side of the wall of the main chamber acting upon and supporting thethermostat at its central portion on its other side.

Y t 2. In a thermostatic valve, the combination of a body having a main chamber open at thetop and provided with the outlet at its bottom and a preliminary chamber provided with the inlet and forming a pocket extending below the inlet for the intercep-,

tion of dirt, a wall between said chambers, the wall between the main chamber and preliminary chamber being provided with the thoroughfare between the inletrand outlet located adjacent to the inlet, a valve-piece C ntrolling said thoroughfare, a thermostat inlet for the interception of dirt, a wall between said chambers, the wall between the main chamber and preliminary chamber being provided with the thoroughfare between the inlet and outlet, and the main and preliminary chambers also having communication at the bottom, a valve-piece to control the thoroughfare, a thermostat in the main chamber controlling said valve-piece, and a manually adjustable valve controlling the communication between the bottom of the preliminary chamber and the main chamber.

4. In a thermostatic valve, the combination of a body having a main chamber provided with an outlet at the bottom, and a preliminary chamber provided with the inlet and extending below the inlet and adjacent to the lower portion of the main chamber, a wall between said chambers, provided with an opening between the bottom of the preliminary chamber and the lower portion of the main chamber and also with a thoroughfare between the upper part of the preliminary chamber and the main chamber, a manually adjustable valve, controlling the communication between the bottom of the preliminary chamber and the lower portion of the main chamber, and an automatically controlled valve controlling the thorough fare between upper part of the preliminary chamber and the main chamber.

5. In a thermostatic valve, the combination of a-body having a main chamber, provided with anoutlet at the bottom, and a preliminary chamber provided with the in let, and extending below the inlet and adj acent to the lower portion of the main chamber, a wall between'said chambers, provided with an opening between the bottom of the preliminary chamber and the lower portion of the main chamber and also with a thoroughfare between the upper part of the preliminary chamber and the main chamber, a manually adjustable valve, controlling the communication between the bottom of the preliminary chamber and the lower portion of the main chamber, an automatically controlled valve controlling the thoroughfare between upper part of the preliminary chamber and the maln chamber, and a thermostat 6. In a thermostatic valve, the combination of a body having a main chamber open at the top and provided with an outlet. atthe bottom, and a preliminary chamber provided with the inlet and extending below'the inlet and adjacent to the lower portion of the main chamber, a wall between said chambers, provided with an opening forming a communication between the bottom of-the preliminary chamber and the lower portion of the main chamber, and also with atheroughfare between the upper part of the preliminary chamber and the main chamber, a valve to control the communication between the bottom of the preliminary chamber, and

the lower part of the main chamber, an 15 automatic valve to control the thoroughfare between the upper part of the preliminary chamber and the main Ehamber, a thermostat in the main chamber, controlling said automatic valve, and a removable cap closing 20 the open top of the main chamber.

In testimony of which invention I have hereunto set my hand.

EDWARD W. COMFORT. 

